---Where____ some children _______? ---They're going into the park.
A. do, go
B. is, going
C. are, going
The children ______ off the tree now.
A. are jumping
B. is jumping
C. jumps
Are they reading in the living room or _______ in the kitchen?
A. cook
B. cooking
C. are cooking
---What're the women doing? ---They ______ the dishes.
A. wash
B. is washing
C. are washing